Pet excrement tray



FIG. 1 is a perspective view of the tray showing the new design;

FIG. 2 is a left side view, the opposite side being a mirror image thereof;

FIG. 3 is a right side view, the opposite side being a mirror image thereof;

FIG. 4 is a front side view, the opposite side being a mirror image thereof;

FIG. 5 is a back side view, the opposite side being a mirror image thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines, where shown, represent portions of the pet excrement tray that form no part of the claimed design. 

CLAIM The ornamental design for a pet excrement tray, as shown and described. 